Smoking pipe



-July 24, 1923- H,462,905

J. B. FROST SMOKING PIPE Filed April 16. 1921 /Il 1 l /7 (N VEN 'ro/@ HTTORNEYS.

Patented .Bully 24, 1923.

f NETE@ STATES JOHN B. FROST, OF BUCKLEY, WASHINGTON.

SMOKING PIPE.

Application med April 16,Y .1921. Serial No. l161,911.

To all/whom t may concern:

Be it known that I, JOHN B. FROST, a citizen of the United States, residing at Buckley, inthe county of Pierce and State of Washington, have invented certain new and useful Improvements in Smoking Pipes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to Vmake and use the same.

This invention relates to pipes for tobacco, and particularly to pipes with means for separating the nicotine and other condensible vapors from the smoke before the smoke reaches the mouth of the smoker.

The objects ofthe invention are to `provide a Smoking pipe with a plurality of bowls,

with connection from the inner bowl to the mouthpiece at the end of the stem, the connection to be through a small coiled passageway in the stem of suitable length to cause the vapors to condense andbe separated from the smoke during its travel therethrough.

A further object isvto provide a smoking pipe with a plurality of telescoping bowls with spaces between the bowls and openings through the bowlsK into the spaces, and a passageway leading'fiom the outer space to the mouthpiece of the pipe, together with suitable cavities at the bases of the bowls for collecting the nicotine from the smoke.

A further object is to provide a light and easily carried small smoking pipe with means therein for separating the nicotine from the smoke as it passes from the burning tobacco to the mouth of the smoker, so that as the smoke is drawn into the mouth it willlbe practically free-from nicotine.A

One sheet of drawings accompanies thas `specification as part thereof, in which like reference characters indicate similar partsv is a detail in section of the interior cates the outer shell or bowl of the smoking plpe used 1n the smoking of tobacco. The

Minterior of the bowl is provided with a helical flange 2 extending from a circular groove 3 ynear the mouth of the bowl to the bottom thereof, the helical space 3a formed by the ange constituting a passageway from the groove-3 to the cupped base.8.

The mouth of the bowl 1 is beveled as at 4' to form a tight union with a flange 5 of similarshape'on the secondary bowl 6, which 1s placed within the bowl 1 with the' outside of the bowl 6 fitting against the inner face of flange 2, so that the outer wall of secondary bowl 6 forms the inner wall of the passageway 3a, while a series of holes 7 in the upper portion ofthe bowl 6 register with the groove 3 when the bowls are telescoped. In the base of the bowl 6 is a suitable depression 8.

The inner edge of the mouth of the bowl 6 is also beveled as at 9 to'form a tight union with a flange 10 of similar taper on the upper portion of the interior bowl 11,. the latter being provided with a series of small holes 12 through the bottom portion. The outer diameter of the bowl 11 is, however, less thantheinner diameter of the secondary bowl 6, so that when bowl 11 is telescoped int bowl 6 and the faces 9 and 10 adjoin each other, there remains a space around that portion of bowl 11 shown as 11a.

The stem 13 of the pipe has a large bore i into which is placed a core 14 provided with ahelical flange 15, thus providing helical groove 16 extending longitudinally of the core. The core, however, does not extend entirely to the inner -end of the stem but terminates at a suitable distance to leave a small cavity 17 into whichopens a passageway 18 from the groove or helical space 3a between the'outer and secondary bowls. The stem is provided with a threaded end '1f which fits into a boss or extension 1a of the bowl 1. l

A connecting cap or plug 19 with thread 2O is screwed into similarly threaded outer end 21 of the stem and holds the core in position, while a passageway 22 leads through the cap to the outer end of the helical passageway 16 by way of a transverse passageway 22" adjacent the end of t-he core. Any suitable mouthpiece 23 is screwed onto the outer end 22 of the cap 19. A passageway 24 through mouthpiece 23 registers with th., passageway`22, completing the continuous passageway or outlet from the inner bowl 11 through the holes 12 in the base of the bowl 11', u around the bowl 11 and through thev holes near the top of secondary bowl 6, thence into the groove space,` 3 and down through the helical passageway 3 in outer bowl 1 to the passageway I18 in stem 13 through space 17 and on around the core 14 through the helical passageway 16 'through passageway 22h and outlet way 22 and through the mouthpiece outlet .24 to the mouthof the smoker, which may without diiliculty be made to total a distance of approximately five feet in a pipe of the dimensions in common use by smokers without this invention.

s the tobacco is burned in the bowl A1 1, the suction from the mouth ofthe smoker draws the smoke through thepassageways described, and as the smoke moves therethrough the nicotine and other vapors therefrom are deposited along the walls of the passageways, leaving the escaping smoke purified, cooled and pleasant. The heaviest portions of the nicotine are deposited within the space 11a Iaround the inner bowl and in the cavityy 8 in the base of bowl 6, andthe next heaviest portions are left in the passageway or groove 3 and `base cavity 8 within the walls of the outer bowl 1, and the remainder is deposited along the passageway through the stem to the mouthpiece, thus the smoke is delivered to the smokers mouth in a substantially dry, oool and cleansed condition, while at the same time the tobacco in the bowl remains dryer` and burns freely and' clearly without the formation of the objectionable wet, non-intiemmable heel. y The parts of the pipe are readily separated and easily cleaned, so that the pipe is easily kept fresh and wholesome.

The pipe may be constructed from any of the light clays, such as meerschaum, or from light metal, preferably aluminum, and instead of the passagewaysl being formed by grooves, a tubular wire may be used, but .l prefer thegmethod first described fas more easily cleaned. The shape of the pipe and parts may be varied to suit the user. lAlso, it will be app-arent that pipes previously constructed ofordinary type may-be improved by having additional bowls inserted as herein described and the helical passageways provided by boring outl the stems and inserting a spiral core.

Claim- In a pipe for smoking tobacco and the like a plurality of telescoping bowls 'theinnermost bowl adapted to contain the burning tobacco being spaced from the next adjacent bowl throughout except for a supporting annular rim and the outermost bowl being spaced from the next adjacent inner bowl by a helical flange defining a helical passage, said helical passage communicating with the space adjoining the innermost bowl adjacent the supporting annular rim and said latter space communicating with the cavity of the innermost bowl by passages formed in the Ilatt/ers bottom. l

' 1n testimony whereof l aiix my signature.

Joint B. `rnosr. 

